ng2-bootstrap-base-modified/demo/src/app/components/+collapse/demos/collapse-demo.component.ts

Native Angular Bootstrap Components Typeahead modified

import { Component } from '@angular/core';

@Component({
  selector: 'collapse-demo',
  templateUrl: './collapse-demo.component.html'
})
export class CollapseDemoComponent {
  public isCollapsed:boolean = false;

  public collapsed(event:any):void {
    console.log(event);
  }

  public expanded(event:any):void {
    console.log(event);
  }
}